Migliori marchi di intimo senza microplastici
Dopo la causa PFAS contro Thinx, una guida sobria ai marchi di intimo i cui materiali si possono davvero verificare.
Di La redazione di PlasticFreeLabAggiornato il June 16, 202613 min di lettura
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Come è stato ottenuto il 91/100.
Pact Organic Cotton Underwear
Pact is the only brand at this price point that carries Fair Trade Certified and GOTS certifications across its full underwear line, with a published Tier 1 supplier list. Size range runs XS-3X, the elastic is covered in organic cotton, and the basics cost roughly what Hanes cost in 2005.
Tutto ciò che compreremmo, in ordine.
- 01Best overall91
Pact Organic Cotton
GOTS-certified organic cotton, Fair Trade Certified factory, XS-3X sizing, and a basics price that makes this a sensible full-drawer replacement. Elastic bands are cotton-covered, not exposed polyester. Pact publishes its factory list and dye chemistry. The cotton has some polyester in the gusset stitching on certain styles (check the individual product tag), but the main body is 95% organic cotton, 5% elastane.
PubblicitàCheck Amazon - 02Best premium89
Subset (formerly Knickey)
GOTS-certified and OEKO-TEX Standard 100 on the full line, sewn in a fair-wage factory in India, with a free recycling program for used underwear. The cotton is softer out of the box than Pact's; you notice on day one. The waistband is the most comfortable in this category. Price is roughly double Pact. Sizing goes to 2XL, which is less inclusive than Pact's 3X.
PubblicitàCheck Amazon - 03Best for inclusive sizing88
MATE the Label
GOTS organic cotton with sizing from XXS to 4X, the broadest range we found. MADE SAFE certified as a brand, meaning the dye and finishing chemistry is independently screened. Slightly heavier fabric than Pact, which wears longer. Price sits between Pact and Subset. The clear pick if size inclusivity or a MADE SAFE paper trail matters to you.
PubblicitàCheck Amazon - 04Best US-made85
Harvest & Mill
US-grown, US-milled, US-sewn organic cotton. One of the only fully-domestic supply chains left in intimate apparel. No synthetic elastic; the waistband uses natural rubber. Limited style range and price per pair is roughly triple Pact. Worth it if domestic manufacturing is a non-negotiable; otherwise it's a capsule piece, not your full drawer.
PubblicitàCheck Amazon - 05Honorable mention74
Boody Bamboo Viscose
OEKO-TEX 100 certified bamboo viscose. Exceptionally soft, stretchy, and well-priced. The honest caveat: bamboo becomes viscose through a chemically intensive process (carbon disulfide, sodium hydroxide), and even closed-loop versions aren't zero-impact. Boody's viscose is certified, but it is not the same category as GOTS cotton from a materials-science standpoint. Fine as a supplement; not our recommendation as a sole replacement.
PubblicitàCheck Amazon - 06Honorable mention79
Organic Basics
GOTS organic cotton with a SilverTech antibacterial line that uses recycled silver ions. The silver treatment has a real mechanism (silver is antimicrobial) but long-term wash durability of the claim is lightly documented. The non-treated organic cotton line is straightforward and well-made. Price is Euro-premium and shipping from Copenhagen adds to it.
PubblicitàCheck Amazon - 07Best hemp alternative76
WAMA Hemp Underwear
53% hemp, 43% organic cotton, 4% spandex. Hemp is naturally antimicrobial and grows with far less water than cotton. OEKO-TEX Standard 100 certified. The fabric has more texture than pure cotton; some readers love it, some find it scratchy. We'd recommend starting with one pair before replacing a drawer.
PubblicitàCheck Amazon - 08Best for sensitive skin80
Cottonique Hypoallergenic
100% organic cotton with no elastic at all. The waistband uses a cotton drawstring. Built for people with latex and elastic sensitivity, which is a small population but a group for whom most 'organic' underwear still causes reactions. Unglamorous, utilitarian, and the right answer for a specific use case.
PubblicitàCheck Amazon - 09Best period underwear83
Saalt Leakproof
Post-Thinx, Saalt is the period underwear brand we'd buy. They publish PFAS test results showing non-detection down to 10 ppb across the line, use OEKO-TEX 100 certified fabric, and the gusset construction uses a non-PFAS moisture barrier. Not zero-synthetic (period underwear requires some), but the most defensible option in the category.
PubblicitàCheck Amazon
Nominati, non lasciati intendere.
Thinx (original line)
Skip58In 2023 Thinx settled a class-action lawsuit over undisclosed PFAS in its period underwear for $4 million, without admitting liability. Independent testing by Mamavation and Sierra magazine preceded the suit. Thinx has since reformulated and publishes non-detection results, but the trust gap is real and there are better-documented alternatives. We'd pick Saalt instead.
Come è nato questo confronto
- Criteri di selezione
- Materiali dichiarati, certificazioni indipendenti, durata in cucina reale, test indipendenti sui contaminanti quando disponibili.
- Come abbiamo valutato
- Dichiarazioni dei produttori, atti regolamentari, articoli peer-reviewed e prove d'usura sul campo. Leggiamo le etichette e i documenti, non i comunicati stampa.
- Chi ci contraddice
- In ogni confronto formuliamo nel modo più solido la posizione opposta e nominiamo il marchio che abbiamo quasi scelto, dicendo perché non l'abbiamo selezionato.
- Cosa ci farebbe cambiare idea
- Nuovi test indipendenti, una riformulazione di un marchio classificato o un risultato peer-reviewed che contraddica il nostro ragionamento attuale.
Le domande che ci arrivano più spesso.
- What actually happened with the Thinx lawsuit?
- In 2020, independent testing by Sierra magazine detected PFAS in Thinx period underwear, contradicting the brand's marketing. A class action followed. In 2023, Thinx settled for approximately $4 million without admitting wrongdoing and agreed to reformulate. The settlement documents and testing reports are public. Thinx's current line tests non-detect; the original problem was real.
- Is organic cotton underwear really plastic-free?
- Mostly, with caveats. GOTS-certified organic cotton is plastic-free in the fabric itself. The elastic is the question. Most organic underwear uses a small percentage of elastane (spandex), which is a synthetic. Brands like Harvest & Mill use natural rubber instead; brands like Pact cover the elastic in cotton so it doesn't touch skin. Truly zero-synthetic is possible (Cottonique) but rare.
- What does GOTS certification mean?
- The Global Organic Textile Standard certifies both the fiber (organic cotton must be at least 70% to 95% of fabric weight depending on tier) and the processing chemistry. GOTS bans a long list of dyes, finishes, and inputs, including formaldehyde, PFAS, chlorine bleach, and most azo dyes. It's the strictest widely-available textile certification. Look for the GOTS logo with a license number on the garment tag.
- Is bamboo underwear plastic-free?
- It depends on the process. 'Bamboo' on a label usually means bamboo viscose (also called rayon), which is bamboo fiber chemically dissolved and reformed. The process involves carbon disulfide and sodium hydroxide. Lyocell-process bamboo (closed-loop) is better but still chemically intensive. True bamboo linen, mechanically processed, exists but is rare and expensive. We'd treat most 'bamboo' underwear as a softer synthetic, not as a natural fiber.
- Do synthetic fabrics actually shed microplastics during wear?
- Yes. A 2020 study in Environmental Science & Technology (De Falco et al.) measured microfiber shedding from polyester garments during both washing and simulated wear, finding 400-600 microfibers released per garment per washing cycle. Indoor air measurements in homes consistently find polyester and acrylic fibers in settled dust. Underwear specifically is a high-contact garment; the case for natural fiber here is stronger than for outerwear.
- How do I wash organic cotton underwear to make it last?
- Cold wash, gentle cycle, hang dry or low tumble. The dryer's high heat is what kills elastane first. Once the waistband loses stretch, the garment's done. A Guppyfriend wash bag also reduces residual synthetic shedding from seams and elastic. Most of our test pairs are going on 18+ months with no visible wear.
Nuovi test indipendenti che contraddicano la nostra classifica. La riformulazione silenziosa di una scelta in alto in classifica che perda una certificazione dichiarata. Uno studio peer-reviewed che cambi il quadro di sicurezza per uno dei materiali sopra. Aggiorneremo questa pagina entro una settimana e segnaleremo cosa è cambiato.
Fonti citate in questa pagina.
- 01Thinx class action settlement (Dickens v. Thinx Inc., 2023)
- 02Sierra magazine — Thinx PFAS testing (2020)
- 03Global Organic Textile Standard (GOTS) — certification criteria
- 04OEKO-TEX Standard 100 — testing criteria
- 05De Falco et al. 2020 — Microfiber release to water via laundering and abrasion, Environmental Science & Technology
- 06MADE SAFE certification standards
La redazione di PlasticFreeLab
Un piccolo gruppo di ricercatrici e redattori che taglia il rumore intorno alla vita non tossica. Leggiamo gli studi, leggiamo le etichette, proviamo i prodotti — e aggiorniamo le nostre raccomandazioni man mano che la scienza avanza. Non accettiamo pagamenti per il product placement, dichiariamo ogni rapporto di affiliazione e nominiamo i marchi che scartiamo.
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